Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Not essential; unessential.
  • adj. Without essence.
  • n. Something that is not essential.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. not essential
  • adj. lacking essence or being
  • n. Something that is not essential

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having no essence or being.
  • adj. Not essential; not required to achieve a given purpose; unessential; unnecessary.

from The Century Dictionary and Cyclopedia

  • Not essential; unessential.
  • Immaterial.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. not absolutely necessary
  • n. anything that is not essential
  • adj. not basic or fundamental

Etymologies

in- +‎ essential (Wiktionary)

Examples

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